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Từ điển Việt Anh Việt 4in1 - English Vietnamese 4 in 1 Dictionary 
	
		  clarion call   
  clar‧i‧on call /ˈklæriən ˌkɔːl $ -ˌkɒːl/ BrE  AmE  noun [countable] formal   [Date: 1800-1900; Origin: clarion type of trumpet (used for battle signals) 1300-1400 Medieval Latin clario, from Latin clarus;  ⇨ ↑clear1]    a strong and direct request for people to do something:         This election is a clarion call for our country to face the challenges ahead.
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